<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>CSS Test (Selectors): Keyboard focus enables :focus-visible</title>
<link rel="author" title="Alice Boxhall" href="[email protected]" />
<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
@supports not selector(:focus-visible) {
#el:focus {
outline: red solid 5px;
background-color: red;
}
}
:focus-visible {
outline: green solid 5px;
}
#el:focus:not(:focus-visible) {
background-color: red;
outline: 0;
}
</style>
</head>
<body>
This test checks that programmatically focusing an element after a keypress causes <code>:focus-visible</code> to match.
<ol id="instructions">
<li>Use the tab key to move focus to the button below that says "Tab to me and press ENTER."</li>
<li>Press ENTER.</li>
<li>If the element that says "I will be focused programmatically." has a red background, then the test result is FAILURE. If the element has a green outline, then the test result is SUCCESS.</li>
</ol>
<br />
<button id="button">Tab to me and press ENTER.</button>
<div id="el" tabindex="-1">I will be focused programmatically.</div>
<script>
if ("async_test" in window) {
async_test(function(t) {
button.addEventListener("click", t.step_func(() => {
el.focus();
}));
el.addEventListener("focus", t.step_func(function() {
assert_equals(getComputedStyle(el).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${el.tagName}#${el.id} should be green`);
assert_not_equals(getComputedStyle(el).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${el.tagName}#${el.id} should NOT be red`);
t.done();
}));
test_driver.send_keys(el, "\ue004\ue007"); // TAB and ENTER
}, "Programmatic focus after keypress should match :focus-visible");
} else {
button.addEventListener("click", () => {
el.focus();
});
}
const tab_key = '\ue004';
const enter_key = '\uE007';
test_driver.send_keys(el, tab_key).then(() => {
test_driver.send_keys(el, enter_key);
});
</script>
</body>
</html>
Codebase Browser
chromium